diff options
author | Darius Augulis <augulis.darius@gmail.com> | 2009-01-21 14:17:25 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-25 00:20:28 +0100 |
commit | 8f182e5ddc84a30d7014a753ae359d85b1238e7f (patch) | |
tree | bbc1d0b3d1ac337d1ff1caa6e9c3b88b4966f474 /drivers/usb/gadget | |
parent | USB: usb-serial ch341: support for DTR/RTS/CTS (diff) | |
download | linux-8f182e5ddc84a30d7014a753ae359d85b1238e7f.tar.xz linux-8f182e5ddc84a30d7014a753ae359d85b1238e7f.zip |
USB: imx_udc: Fix IMX UDC gadget bugs
Fix small bugs and add some omptimization in IMX UDC Gadget.
Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget')
-rw-r--r-- | drivers/usb/gadget/imx_udc.c | 33 | ||||
-rw-r--r-- | drivers/usb/gadget/imx_udc.h | 2 |
2 files changed, 20 insertions, 15 deletions
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c index 77c5d0a8a06e..9e3fe306301d 100644 --- a/drivers/usb/gadget/imx_udc.c +++ b/drivers/usb/gadget/imx_udc.c @@ -283,7 +283,7 @@ void imx_ep_stall(struct imx_ep_struct *imx_ep) imx_flush(imx_ep); /* Special care for ep0 */ - if (EP_NO(imx_ep)) { + if (!EP_NO(imx_ep)) { temp = __raw_readl(imx_usb->base + USB_CTRL); __raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR, imx_usb->base + USB_CTRL); do { } while (__raw_readl(imx_usb->base + USB_CTRL) & CTRL_CMDOVER); @@ -301,7 +301,7 @@ void imx_ep_stall(struct imx_ep_struct *imx_ep) break; udelay(20); } - if (i == 50) + if (i == 100) D_ERR(imx_usb->dev, "<%s> Non finished stall on %s\n", __func__, imx_ep->ep.name); } @@ -539,10 +539,9 @@ static int handle_ep0(struct imx_ep_struct *imx_ep) struct imx_request *req = NULL; int ret = 0; - if (!list_empty(&imx_ep->queue)) + if (!list_empty(&imx_ep->queue)) { req = list_entry(imx_ep->queue.next, struct imx_request, queue); - if (req) { switch (imx_ep->imx_usb->ep0state) { case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR */ @@ -561,6 +560,10 @@ static int handle_ep0(struct imx_ep_struct *imx_ep) } } + else + D_ERR(imx_ep->imx_usb->dev, "<%s> no request on %s\n", + __func__, imx_ep->ep.name); + return ret; } @@ -759,7 +762,7 @@ static int imx_ep_queue */ if (imx_usb->set_config && !EP_NO(imx_ep)) { imx_usb->set_config = 0; - D_EPX(imx_usb->dev, + D_ERR(imx_usb->dev, "<%s> gadget reply set config\n", __func__); return 0; } @@ -779,8 +782,6 @@ static int imx_ep_queue return -ESHUTDOWN; } - local_irq_save(flags); - /* Debug */ D_REQ(imx_usb->dev, "<%s> ep%d %s request for [%d] bytes\n", __func__, EP_NO(imx_ep), @@ -790,17 +791,18 @@ static int imx_ep_queue if (imx_ep->stopped) { usb_req->status = -ESHUTDOWN; - ret = -ESHUTDOWN; - goto out; + return -ESHUTDOWN; } if (req->in_use) { D_ERR(imx_usb->dev, "<%s> refusing to queue req %p (already queued)\n", __func__, req); - goto out; + return 0; } + local_irq_save(flags); + usb_req->status = -EINPROGRESS; usb_req->actual = 0; @@ -810,7 +812,7 @@ static int imx_ep_queue ret = handle_ep0(imx_ep); else ret = handle_ep(imx_ep); -out: + local_irq_restore(flags); return ret; } @@ -1010,10 +1012,8 @@ static irqreturn_t imx_udc_irq(int irq, void *dev) dump_usb_stat(__func__, imx_usb); } - if (!imx_usb->driver) { - /*imx_udc_disable(imx_usb);*/ + if (!imx_usb->driver) goto end_irq; - } if (intr & INTR_WAKEUP) { if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN @@ -1095,6 +1095,11 @@ static irqreturn_t imx_udc_irq(int irq, void *dev) } if (intr & INTR_SOF) { + /* Copy from Freescale BSP. + We must enable SOF intr and set CMDOVER. + Datasheet don't specifiy this action, but it + is done in Freescale BSP, so just copy it. + */ if (imx_usb->ep0state == EP0_IDLE) { temp = __raw_readl(imx_usb->base + USB_CTRL); __raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL); diff --git a/drivers/usb/gadget/imx_udc.h b/drivers/usb/gadget/imx_udc.h index 850076937d8d..d1dfb2d2fa8b 100644 --- a/drivers/usb/gadget/imx_udc.h +++ b/drivers/usb/gadget/imx_udc.h @@ -170,7 +170,7 @@ struct imx_udc_struct { /* #define DEBUG_IRQ */ /* #define DEBUG_EPIRQ */ /* #define DEBUG_DUMP */ -#define DEBUG_ERR +/* #define DEBUG_ERR */ #ifdef DEBUG_REQ #define D_REQ(dev, args...) dev_dbg(dev, ## args) |